CN201802626U - Oil supply system of screw compressor - Google Patents

Oil supply system of screw compressor Download PDF

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Publication number
CN201802626U
CN201802626U CN2010205239497U CN201020523949U CN201802626U CN 201802626 U CN201802626 U CN 201802626U CN 2010205239497 U CN2010205239497 U CN 2010205239497U CN 201020523949 U CN201020523949 U CN 201020523949U CN 201802626 U CN201802626 U CN 201802626U
Authority
CN
China
Prior art keywords
oil
compressor
communicated
oil supply
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010205239497U
Other languages
Chinese (zh)
Inventor
谭来仔
陈传宝
谢洋
李建豪
吴肖我
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANJING WUZHOU REFRIGERATION GROUP CO Ltd
Original Assignee
NANJING WUZHOU REFRIGERATION GROUP CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NANJING WUZHOU REFRIGERATION GROUP CO Ltd filed Critical NANJING WUZHOU REFRIGERATION GROUP CO Ltd
Priority to CN2010205239497U priority Critical patent/CN201802626U/en
Application granted granted Critical
Publication of CN201802626U publication Critical patent/CN201802626U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an oil supply system of a screw compressor, which comprises a compressor and an oil separator. An exhaust port of the compressor is communicated with an air suction port of the oil separator, and an oil discharge port of the oil separator is communicated with an oil suction port of the compressor through an oil return pipeline. The oil supply system is characterized in that a differential pressure maintaining valve is arranged on an exhaust pipeline of the oil separator, and an external balancing pipe joint is disposed on the differential pressure maintaining valve and communicated with an air suction port of the compressor. The oil supply system of the screw compressor leads the compressor to build necessary high and low pressure difference in short time by the aid of the built-in pressure difference maintaining valve, realizes sufficient oil supply, omits an oil pump to supply oil forcedly before the compressor is started, and accordingly has the advantages of energy conservation, simplicity, convenience in maintenance, reliable operation and low cost.

Description

A kind of oil supply system of helical-lobe compressor
Technical field
The utility model relates to a kind of oil supply system, relates in particular to the oil supply system of big discharge capacity or low differential pressure helical-lobe compressor.
Background technique
The major function of lubricant oil is lubricated, cooling and capacity regulating in the helical-lobe compressor, and oil supply system whether normal is directly connected to the life-span of compressor and the normal operation of whole refrigeration system.Helical-lobe compressor adopts differential fuel feeding, and the high low pressure that promptly relies on compressor operating and produced is set up oil supply system by pressure difference.And it is generally long for the helical-lobe compressor discharge capacity greater than the time of system's build-up pressure difference of 1000m3/h or low differential pressure, external oil pump systems fuel feeding need be set, its working principle is: before the compressor start, oil pump needs operation in advance to force fuel feeding, when pressure reduction is set up the gear pump fuel cut-off.In case the unbalance then oil pump of high low pressure pressure reduction starts once more and forces the pressurization fuel feeding in running.Mainly there is following problem in the employing of oil pump: 1. the wasted work of oil pump itself; 2. the shaft sealing leakage problem of oil pump; 3. the existence of oil pump causes the complexity that oil supply system is provided with.
Summary of the invention
Goal of the invention: in order to solve the problems of the technologies described above, the utility model provide a kind of energy-conservation, do not have leak, the oil supply system of simple and reliable helical-lobe compressor.
Technological scheme: a kind of oil supply system of helical-lobe compressor comprises compressor and oil separator; Exhaust outlet of compressor is communicated with the oil separator intakeport, and the oil drain out of oil separator is communicated with the compressor inlet port by return line; On described return line, be provided with differential pressure switch, filter, maintenance valve, oil extraction hand valve, solenoid valve, liquid-sighting glass and flow switch; Be provided with the pressure differential maintain valve on the oil separator gas exhaust piping, be provided with the external balance pipe joint on the pressure differential maintain valve, the external balance pipe joint is communicated with the intakeport of compressor.
Wherein, described flow switch also can be an oil level switch.
Beneficial effect: the oil supply system portion of helical-lobe compressor of the present utility model is by built-in pressure differential maintain valve, make compressor set up necessary height pressure reduction at short notice, make system's fuel feeding abundant, do not need oil pump to force fuel feeding before the compressor start, therefore have energy-conservation, system is simple, easy to maintenance, reliable, characteristics that expense is cheap.
Description of drawings
Fig. 1 is an oil-way system schematic representation of the present utility model.
Fig. 2 is the structural representation of pressure differential maintain valve.
Embodiment:
Below in conjunction with accompanying drawing the utility model is done further explanation.
As shown in Figure 1, the oil supply system of helical-lobe compressor of the present utility model comprises compressor 1, pressure differential maintain valve 2, oil separator 3, external balance pipe joint 11 and return line; Compressor 1 relief opening is communicated with oil separator 3 intakepories, is provided with pressure differential maintain valve 2 on oil separator 3 gas exhaust pipings, and pressure differential maintain valve 2 is communicated with the intakeport of compressor 1; The oil drain out of oil separator 3 is communicated with compressor 1 inlet port by return line, return line is provided with differential pressure switch 4, filter 5, maintenance valve 6, oil extraction hand valve 7, solenoid valve 8, liquid-sighting glass 9 and flow switch 10, and described flow switch 10 also can be an oil level switch.
As shown in Figure 2, pressure differential maintain valve 2 lower ends are communicated with gas exhaust piping, and pressure differential maintain valve 2 left ends are communicated with condenser, are provided with external balance pipe joint 11 on pressure differential maintain valve 2, and external balance pipe joint 11 is communicated with the intakeport of compressor 1.Pressure differential maintain valve 2 be subjected to respectively from the below Compressor Discharge Pressure, from the spring pressure and the compressor air suction pressure of top.Have only when exhaust pressure during greater than spring pressure and pressure of inspiration(Pi) sum, valve just can be opened.After compressor 1 start, can set up enough height pressure reduction at short notice during pressure differential maintain valve 2, make system's fuel feeding abundant, so do not need oil pump to force fuel feeding before compressor 1 start.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (2)

1. the oil supply system of a helical-lobe compressor comprises compressor (1) and oil separator (3); Compressor (1) relief opening is communicated with oil separator (3) intakeport, and the oil drain out of oil separator (3) is communicated with compressor (1) inlet port by return line; On described return line, be provided with differential pressure switch (4), filter (5), maintenance valve (6), oil extraction hand valve (7), solenoid valve (8), liquid-sighting glass (9) and flow switch (10); It is characterized in that: be provided with pressure differential maintain valve (2) on oil separator (3) gas exhaust piping, be provided with external balance pipe joint (11) on pressure differential maintain valve (2), external balance pipe joint (11) is communicated with the intakeport of compressor (1).
2. the oil supply system of a kind of helical-lobe compressor according to claim 1, it is characterized in that: described flow switch (10) also can be an oil level switch.
CN2010205239497U 2010-09-09 2010-09-09 Oil supply system of screw compressor Expired - Fee Related CN201802626U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010205239497U CN201802626U (en) 2010-09-09 2010-09-09 Oil supply system of screw compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010205239497U CN201802626U (en) 2010-09-09 2010-09-09 Oil supply system of screw compressor

Publications (1)

Publication Number Publication Date
CN201802626U true CN201802626U (en) 2011-04-20

Family

ID=43872127

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010205239497U Expired - Fee Related CN201802626U (en) 2010-09-09 2010-09-09 Oil supply system of screw compressor

Country Status (1)

Country Link
CN (1) CN201802626U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103162460A (en) * 2011-12-15 2013-06-19 同方人工环境有限公司 Hydraulic filling type screw water-cooled cold water and heat pump unit
CN104422065A (en) * 2013-08-23 2015-03-18 珠海格力电器股份有限公司 Air conditioning system and control method thereof
CN105134605A (en) * 2014-05-28 2015-12-09 英格索尔-兰德公司 Compressor system and oil separation system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103162460A (en) * 2011-12-15 2013-06-19 同方人工环境有限公司 Hydraulic filling type screw water-cooled cold water and heat pump unit
CN104422065A (en) * 2013-08-23 2015-03-18 珠海格力电器股份有限公司 Air conditioning system and control method thereof
CN105134605A (en) * 2014-05-28 2015-12-09 英格索尔-兰德公司 Compressor system and oil separation system
CN105134605B (en) * 2014-05-28 2018-08-10 英格索尔-兰德公司 Compressor assembly and the system and method for detaching oil from gas/oil mixture therein

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110420

Termination date: 20150909

EXPY Termination of patent right or utility model